Answer: D. 43,232 trillion kilometers
Explanation:
We have the distance between Earth and V391 Pegasi b in light years:
[tex]4570 ly[/tex]
And we have to find this distance in kilometers:
[tex]4570 ly \frac{9.46 trillion km}{1 ly}=43232.2 trillion km[/tex]
Hence the distance in kilometers is:
[tex]4570 ly=43232.2 trillion km \approx 43232 trillion km[/tex]